Maxim Integrated / MAX5171

Maxim Integrated MAX5171 14-bit Force/Sense DAC

Dependents:   MAX5171BOB_Tester MAX5171BOB_14bit_Remote_Sense_SPI_DAC MAX5171BOB_Serial_Tester

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MAX5171 Class Reference
Public Types | Public Member Functions | Data Fields

MAX5171 Class Reference

MAX5171 Low-Power, Serial, 14-Bit, 1-Channel DACs with Force/Sense Voltage Output and SPI Interface. More...

#include <MAX5171.h>

Public Types

enum  MAX5171_CMD_enum_t {
  CMD_00dd_dddd_dddd_dddd_CODE = 0x0000, CMD_01dd_dddd_dddd_dddd_CODE_LOAD = 0x4000, CMD_10xx_xxxx_xxxx_xxxx_LOAD = 0x8000, CMD_1100_xxxx_xxxx_xxxx_NOP = 0xc000,
  CMD_1101_xxxx_xxxx_xxxx_SHUTDOWN = 0xd000, CMD_1110_0xxx_xxxx_xxxx_UPO_LOW = 0xe000, CMD_1110_1xxx_xxxx_xxxx_UPO_HIGH = 0xe800, CMD_1111_0xxx_xxxx_xxxx_MODE1_DOUT_SCLK_RISING_EDGE = 0xf000,
  CMD_1111_1xxx_xxxx_xxxx_MODE0_DOUT_SCLK_FALLING_EDGE = 0xf800
}
 

Command Codes (first byte)

More...
enum  MAX5171_ic_t
 

IC's supported with this driver.

More...
typedef enum
MAX5171::MAX5171_CMD_enum_t 		MAX5171_CMD_enum_t
 Command Codes (first byte)

Public Member Functions

 MAX5171 (SPI &spi, DigitalOut &cs_pin, DigitalOut &RS_pin, DigitalOut &PDLb_pin, DigitalOut &CLRb_pin, DigitalOut &SHDN_pin, DigitalIn &UPO_pin, MAX5171_ic_t ic_variant)
 Constructor for MAX5171 Class.
void spi_frequency (int spi_sclk_Hz)
 set SPI SCLK frequency
int get_spi_frequency () const
 get SPI SCLK frequency
int get_spi_dataMode () const
 get SPI mode
void Init (void)
 Menu item '!' Initialize device.
uint16_t DACCodeOfVoltage (double voltageV)
 Return the DAC register value corresponding to physical voltage.
double VoltageOfCode (uint16_t value_u14)
 Return the physical voltage corresponding to DAC register.
uint8_t CODE (uint16_t dacCodeLsbs)
 CMD_00dd_dddd_dddd_dddd_CODE.
uint8_t CODE_LOAD (uint16_t dacCodeLsbs)
 CMD_01dd_dddd_dddd_dddd_CODE_LOAD.
uint8_t LOAD (void)
 CMD_10xx_xxxx_xxxx_xxxx_LOAD.
uint8_t NOP (void)
 CMD_1100_xxxx_xxxx_xxxx_NOP.
uint8_t SHUTDOWN (void)
 CMD_1101_xxxx_xxxx_xxxx_SHUTDOWN.
uint8_t UPO_LOW (void)
 CMD_1110_0xxx_xxxx_xxxx_UPO_LOW.
uint8_t UPO_HIGH (void)
 CMD_1110_1xxx_xxxx_xxxx_UPO_HIGH.
uint8_t MODE1_DOUT_SCLK_RISING_EDGE (void)
 CMD_1111_0xxx_xxxx_xxxx_MODE1_DOUT_SCLK_RISING_EDGE.
uint8_t MODE0_DOUT_SCLK_FALLING_EDGE (void)
 CMD_1111_1xxx_xxxx_xxxx_MODE0_DOUT_SCLK_FALLING_EDGE.

Data Fields

Callback< void(size_t, uint8_t
*, uint8_t *) 		onSPIprint )
 Function pointer void f(size_t byteCount, uint8_t mosiData[], uint8_t misoData[])
double VRef
 reference voltage, in Volts
int16_t DACCode
 shadow of dacCodeLsbs; write-only dacCodeLsbs field CMD_00dd_dddd_dddd_dddd_CODE or CMD_01dd_dddd_dddd_dddd_CODE_LOAD

Detailed Description

MAX5171 Low-Power, Serial, 14-Bit, 1-Channel DACs with Force/Sense Voltage Output and SPI Interface.

Datasheet: https://www.maximintegrated.com/MAX5171

 // example code includes
 // standard include for target platform -- Platform_Include_Boilerplate
 #include "mbed.h"
 // Platforms:
 //   - MAX32625MBED
 //      - supports mbed-os-5.11, requires USBDevice library
 //      - add https://developer.mbed.org/teams/MaximIntegrated/code/USBDevice/
 //      - remove max32630fthr library (if present)
 //      - remove MAX32620FTHR library (if present)
 //   - MAX32600MBED
 //      - remove max32630fthr library (if present)
 //      - remove MAX32620FTHR library (if present)
 //      - Windows 10 note:  Don't connect HDK until you are ready to load new firmware into the board.
 //   - NUCLEO_F446RE
 //      - remove USBDevice library
 //      - remove max32630fthr library (if present)
 //      - remove MAX32620FTHR library (if present)
 //   - NUCLEO_F401RE
 //      - remove USBDevice library
 //      - remove max32630fthr library (if present)
 //      - remove MAX32620FTHR library (if present)
 //   - MAX32630FTHR
 //      - #include "max32630fthr.h"
 //      - add http://os.mbed.org/teams/MaximIntegrated/code/max32630fthr/
 //      - remove MAX32620FTHR library (if present)
 //   - MAX32620FTHR
 //      - #include "MAX32620FTHR.h"
 //      - remove max32630fthr library (if present)
 //      - add https://os.mbed.com/teams/MaximIntegrated/code/MAX32620FTHR/
 //      - not tested yet
 //   - MAX32625PICO
 //      - remove max32630fthr library (if present)
 //      - remove MAX32620FTHR library (if present)
 //      - not tested yet
 //
 // end Platform_Include_Boilerplate
 #include "MAX5171.h"

 // example code board support
 //MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
 //DigitalOut rLED(LED1);
 //DigitalOut gLED(LED2);
 //DigitalOut bLED(LED3);
 //
 // Arduino "shield" connector port definitions (MAX32625MBED shown)
 #if defined(TARGET_MAX32625MBED)
 #define A0 AIN_0
 #define A1 AIN_1
 #define A2 AIN_2
 #define A3 AIN_3
 #define D0 P0_0
 #define D1 P0_1
 #define D2 P0_2
 #define D3 P0_3
 #define D4 P0_4
 #define D5 P0_5
 #define D6 P0_6
 #define D7 P0_7
 #define D8 P1_4
 #define D9 P1_5
 #define D10 P1_3
 #define D11 P1_1
 #define D12 P1_2
 #define D13 P1_0
 #endif

 // example code declare SPI interface (GPIO controlled CS)
 #if defined(TARGET_MAX32625MBED)
 SPI spi(SPI1_MOSI, SPI1_MISO, SPI1_SCK); // mosi, miso, sclk spi1 TARGET_MAX32625MBED: P1_1 P1_2 P1_0 Arduino 10-pin header D11 D12 D13
 DigitalOut spi_cs(SPI1_SS); // TARGET_MAX32625MBED: P1_3 Arduino 10-pin header D10
 #elif defined(TARGET_MAX32600MBED)
 SPI spi(SPI2_MOSI, SPI2_MISO, SPI2_SCK); // mosi, miso, sclk spi1 TARGET_MAX32600MBED: Arduino 10-pin header D11 D12 D13
 DigitalOut spi_cs(SPI2_SS); // Generic: Arduino 10-pin header D10
 #elif defined(TARGET_NUCLEO_F446RE) || defined(TARGET_NUCLEO_F401RE)
 // TODO1: avoid resource conflict between P5_0, P5_1, P5_2 SPI and DigitalInOut
 // void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel)
 //
 // TODO1: NUCLEO_F446RE SPI not working; CS and MOSI data looks OK but no SCLK clock pulses.
 SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK); // mosi, miso, sclk spi1 TARGET_NUCLEO_F446RE: Arduino 10-pin header D11 D12 D13
 DigitalOut spi_cs(SPI_CS); // TARGET_NUCLEO_F446RE: PB_6 Arduino 10-pin header D10
 //
 #else
 SPI spi(D11, D12, D13); // mosi, miso, sclk spi1 TARGET_MAX32600MBED: Arduino 10-pin header D11 D12 D13
 DigitalOut spi_cs(D10); // Generic: Arduino 10-pin header D10
 #endif

 // example code declare GPIO interface pins
 // AnalogOut FB_pin(Px_x_PortName_To_Be_Determined); // Analog Input to MAX5171 device
 DigitalOut RS_pin(D9); // Digital Configuration Input to MAX5171 device
 DigitalOut PDLb_pin(D8); // Digital Configuration Input to MAX5171 device
 DigitalOut CLRb_pin(D7); // Digital Configuration Input to MAX5171 device
 DigitalOut SHDN_pin(D6); // Digital Configuration Input to MAX5171 device
 // AnalogIn OUT_pin(A0); // Analog Output from MAX5171 device
 DigitalIn UPO_pin(D5); // Digital General-Purpose Output from MAX5171 device
 // example code declare device instance
 MAX5171 g_MAX5171_device(spi, spi_cs, RS_pin, PDLb_pin, CLRb_pin, SHDN_pin, UPO_pin, MAX5171::MAX5171_IC);

 // example code main function
 int main()
 {
     g_MAX5171_device.Init();

     while (1)
     {
         uint16_t code;
         //
         // example #1
         code = 0x3fff; // 100.0% of full scale REF(2.50V) = 2.50V (FB=1-2:FORCE_BIP/SENSE_BIP: 2.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 5.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #2
         code = 0x3998; // 90.0% of full scale REF(2.50V) = 2.25V (FB=1-2:FORCE_BIP/SENSE_BIP: 2.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 4.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #3
         code = 0x3332; // 80.0% of full scale REF(2.50V) = 2.00V (FB=1-2:FORCE_BIP/SENSE_BIP: 1.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 4.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #4
         code = 0x2ccc; // 70.0% of full scale REF(2.50V) = 1.75V (FB=1-2:FORCE_BIP/SENSE_BIP: 1.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 3.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #5
         code = 0x2665; // 60.0% of full scale REF(2.50V) = 1.50V (FB=1-2:FORCE_BIP/SENSE_BIP: 0.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 3.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #6
         code = 0x1fff; // 50.0% of full scale REF(2.50V) = 1.25V (FB=1-2:FORCE_BIP/SENSE_BIP: 0.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 2.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #7
         code = 0x1999; // 40.0% of full scale REF(2.50V) = 1.00V (FB=1-2:FORCE_BIP/SENSE_BIP: -0.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 2.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #8
         code = 0x1332; // 30.0% of full scale REF(2.50V) = 0.75V (FB=1-2:FORCE_BIP/SENSE_BIP: -1.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 1.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #9
         code = 0x0ccc; // 20.0% of full scale REF(2.50V) = 0.50V (FB=1-2:FORCE_BIP/SENSE_BIP: -1.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 1.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #10
         code = 0x0666; // 10.0% of full scale REF(2.50V) = 0.25V (FB=1-2:FORCE_BIP/SENSE_BIP: -2.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 0.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #11
         code = 0x0000; // 0.0% of full scale REF(2.50V) = 0.00V (FB=1-2:FORCE_BIP/SENSE_BIP: -2.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 0.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #12
         code = 0x0000; // 0.0% of full scale REF(2.50V) = 0.00V (FB=1-2:FORCE_BIP/SENSE_BIP: -2.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 0.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #13
         code = 0x0666; // 10.0% of full scale REF(2.50V) = 0.25V (FB=1-2:FORCE_BIP/SENSE_BIP: -2.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 0.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #14
         code = 0x0ccc; // 20.0% of full scale REF(2.50V) = 0.50V (FB=1-2:FORCE_BIP/SENSE_BIP: -1.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 1.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #15
         code = 0x1332; // 30.0% of full scale REF(2.50V) = 0.75V (FB=1-2:FORCE_BIP/SENSE_BIP: -1.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 1.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #16
         code = 0x1999; // 40.0% of full scale REF(2.50V) = 1.00V (FB=1-2:FORCE_BIP/SENSE_BIP: -0.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 2.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #17
         code = 0x1fff; // 50.0% of full scale REF(2.50V) = 1.25V (FB=1-2:FORCE_BIP/SENSE_BIP: 0.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 2.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #18
         code = 0x2665; // 60.0% of full scale REF(2.50V) = 1.50V (FB=1-2:FORCE_BIP/SENSE_BIP: 0.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 3.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #19
         code = 0x2ccc; // 70.0% of full scale REF(2.50V) = 1.75V (FB=1-2:FORCE_BIP/SENSE_BIP: 1.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 3.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #20
         code = 0x3332; // 80.0% of full scale REF(2.50V) = 2.00V (FB=1-2:FORCE_BIP/SENSE_BIP: 1.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 4.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #21
         code = 0x3998; // 90.0% of full scale REF(2.50V) = 2.25V (FB=1-2:FORCE_BIP/SENSE_BIP: 2.00V) (FB=2-3:FORCE_UNI/SENSE_UNI: 4.50V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)
         //
         // example #22
         code = 0x3fff; // 100.0% of full scale REF(2.50V) = 2.50V (FB=1-2:FORCE_BIP/SENSE_BIP: 2.50V) (FB=2-3:FORCE_UNI/SENSE_UNI: 5.00V)
         g_MAX5171_device.CODE_LOAD(code);
         wait_ms(3000); // wait_ms(unsigned long interval_msec)

         // wait(3.0);
     }
 }

Definition at line 333 of file MAX5171.h.

Member Typedef Documentation

typedef enum MAX5171::MAX5171_CMD_enum_t MAX5171_CMD_enum_t

Command Codes (first byte)

Naming convention is CMD_bitstream_FUNCTION_NAME

  • dd_dddd_dddd_dddd = data field
  • xxxx = don't care

Member Enumeration Documentation

enum MAX5171_CMD_enum_t

Command Codes (first byte)

Naming convention is CMD_bitstream_FUNCTION_NAME

  • dd_dddd_dddd_dddd = data field
  • xxxx = don't care
Enumerator:
CMD_00dd_dddd_dddd_dddd_CODE 

0b0000000000000000

CMD_01dd_dddd_dddd_dddd_CODE_LOAD 

0b0100000000000000

CMD_10xx_xxxx_xxxx_xxxx_LOAD 

0b1000000000000000

CMD_1100_xxxx_xxxx_xxxx_NOP 

0b1100000000000000

CMD_1101_xxxx_xxxx_xxxx_SHUTDOWN 

0b1101000000000000

CMD_1110_0xxx_xxxx_xxxx_UPO_LOW 

0b1110000000000000

CMD_1110_1xxx_xxxx_xxxx_UPO_HIGH 

0b1110100000000000

CMD_1111_0xxx_xxxx_xxxx_MODE1_DOUT_SCLK_RISING_EDGE 

0b1111000000000000

CMD_1111_1xxx_xxxx_xxxx_MODE0_DOUT_SCLK_FALLING_EDGE 

0b1111100000000000

Definition at line 341 of file MAX5171.h.

enum MAX5171_ic_t

IC's supported with this driver.

MAX5171

Definition at line 357 of file MAX5171.h.

Constructor & Destructor Documentation

MAX5171 ( SPI &  spi,
DigitalOut &  cs_pin,
DigitalOut &  RS_pin,
DigitalOut &  PDLb_pin,
DigitalOut &  CLRb_pin,
DigitalOut &  SHDN_pin,
DigitalIn &  UPO_pin,
MAX5171_ic_t  ic_variant 
)

Constructor for MAX5171 Class.

Requires an existing SPI object as well as a DigitalOut object. The DigitalOut object is used for a chip enable signal

On Entry:

Parameters:
[in]spi- pointer to existing SPI object
[in]cs_pin- pointer to a DigitalOut pin object
[in]RS_pin- pointer to a DigitalOut pin object
[in]PDLb_pin- pointer to a DigitalOut pin object
[in]CLRb_pin- pointer to a DigitalOut pin object
[in]SHDN_pin- pointer to a DigitalOut pin object
[in]UPO_pin- pointer to a DigitalIn pin object
[in]ic_variant- which type of MAX5171 is used

On Exit:

Returns:
None

Definition at line 118 of file MAX5171.cpp.

Member Function Documentation

uint8_t CODE ( uint16_t  dacCodeLsbs )

CMD_00dd_dddd_dddd_dddd_CODE.

Load input register; DAC registers are unchanged.

Returns:
1 on success; 0 on failure

Definition at line 494 of file MAX5171.cpp.

uint8_t CODE_LOAD ( uint16_t  dacCodeLsbs )

CMD_01dd_dddd_dddd_dddd_CODE_LOAD.

Load input register; DAC registers are updated (start up DAC with new data).

Returns:
1 on success; 0 on failure

Definition at line 522 of file MAX5171.cpp.

uint16_t DACCodeOfVoltage ( double  voltageV )

Return the DAC register value corresponding to physical voltage.

Does not perform any offset or gain correction.

Precondition:
g_MAX5171_device.VRef = Voltage of REF input, in Volts
Parameters:
[in]voltage= physical voltage in Volts
Returns:
raw 14-bit MAX5171 code (right justified).

Definition at line 445 of file MAX5171.cpp.

int get_spi_dataMode (  ) const

get SPI mode

Definition at line 416 of file MAX5171.h.

int get_spi_frequency (  ) const

get SPI SCLK frequency

Definition at line 413 of file MAX5171.h.

void Init ( void   )

Menu item '!' Initialize device.

TODO1: #170 MAX5171 Self Test for Test Fixture Firmware test group ____ // Verify function ____ (enabled by default) test tinyTester.settle_time_msec = 250;

Device Testing: DAC commands, verify using on-board ADC inputs

tinyTester.err_threshold = 0.030; // 30mV

cmdLine.serial().printf(" MAX5171.CODE_LOAD code=%d", code); g_MAX5171_device.CODE_LOAD(code);

code = 0x0000; cmdLine.serial().printf(" MAX5171.CODE_LOAD code=%d", code); g_MAX5171_device.CODE_LOAD(code);

code = 0x1FFF; cmdLine.serial().printf(" MAX5171.CODE_LOAD code=%d", code); g_MAX5171_device.CODE_LOAD(code);

test UPO User Programmable Output, verify using digital input D2

cmdLine.serial().printf(" MAX5171.UPO_LOW"); g_MAX5171_device.UPO_LOW();

cmdLine.serial().printf(" MAX5171.UPO_HIGH"); g_MAX5171_device.UPO_HIGH();

Definition at line 430 of file MAX5171.cpp.

uint8_t LOAD ( void   )

CMD_10xx_xxxx_xxxx_xxxx_LOAD.

Update DAC register from input register (start up DAC with data previously stored in the input registers).

Returns:
1 on success; 0 on failure

Definition at line 551 of file MAX5171.cpp.

uint8_t MODE0_DOUT_SCLK_FALLING_EDGE ( void   )

CMD_1111_1xxx_xxxx_xxxx_MODE0_DOUT_SCLK_FALLING_EDGE.

Mode 0, DOUT clocked out on SCLK's falling edge (default).

Returns:
1 on success; 0 on failure

Definition at line 689 of file MAX5171.cpp.

uint8_t MODE1_DOUT_SCLK_RISING_EDGE ( void   )

CMD_1111_0xxx_xxxx_xxxx_MODE1_DOUT_SCLK_RISING_EDGE.

Mode 1, DOUT clocked out on SCLK's rising edge.

Returns:
1 on success; 0 on failure

Definition at line 666 of file MAX5171.cpp.

uint8_t NOP ( void   )

CMD_1100_xxxx_xxxx_xxxx_NOP.

No operation (NOP).

Returns:
1 on success; 0 on failure

Definition at line 574 of file MAX5171.cpp.

uint8_t SHUTDOWN ( void   )

CMD_1101_xxxx_xxxx_xxxx_SHUTDOWN.

Shut down DAC (provided PDL# = 1).

Returns:
1 on success; 0 on failure

Definition at line 597 of file MAX5171.cpp.

void spi_frequency ( int  spi_sclk_Hz )

set SPI SCLK frequency

Definition at line 189 of file MAX5171.cpp.

uint8_t UPO_HIGH ( void   )

CMD_1110_1xxx_xxxx_xxxx_UPO_HIGH.

UPO goes high.

Returns:
1 on success; 0 on failure

Definition at line 643 of file MAX5171.cpp.

uint8_t UPO_LOW ( void   )

CMD_1110_0xxx_xxxx_xxxx_UPO_LOW.

UPO goes low (default).

Returns:
1 on success; 0 on failure

Definition at line 620 of file MAX5171.cpp.

double VoltageOfCode ( uint16_t  value_u14 )

Return the physical voltage corresponding to DAC register.

Does not perform any offset or gain correction.

Precondition:
g_MAX5171_device.VRef = Voltage of REF input, in Volts
Parameters:
[in]value_u14,:raw 14-bit MAX5171 code (right justified).
Returns:
physical voltage corresponding to MAX5171 code.

Definition at line 475 of file MAX5171.cpp.

Field Documentation

int16_t DACCode

shadow of dacCodeLsbs; write-only dacCodeLsbs field CMD_00dd_dddd_dddd_dddd_CODE or CMD_01dd_dddd_dddd_dddd_CODE_LOAD

Definition at line 425 of file MAX5171.h.

Callback<void(size_t, uint8_t*, uint8_t*) onSPIprint)

Function pointer void f(size_t byteCount, uint8_t mosiData[], uint8_t misoData[])

optional onSPIprint SPI diagnostic function

Definition at line 407 of file MAX5171.h.

double VRef

reference voltage, in Volts

Definition at line 422 of file MAX5171.h.

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